Outlook 2011 for Mac (french)
Every time I leave and come back to Outlook 2011 some of the messages "marked as read" become "marked as non read".
If I select them and do a click right to select "mark as read" nothing happens... I have to "select all" then click on "mark as non read" and select all again and click "mark as read" to get them "marked as non read" but often when I leave and come back to Outlook 2011 some of the messages "marked as read" become "marked as non read".
It's just terrificlyboring.
Thanks for your help.